JPH01132961U - - Google Patents
Info
- Publication number
- JPH01132961U JPH01132961U JP2497088U JP2497088U JPH01132961U JP H01132961 U JPH01132961 U JP H01132961U JP 2497088 U JP2497088 U JP 2497088U JP 2497088 U JP2497088 U JP 2497088U JP H01132961 U JPH01132961 U JP H01132961U
- Authority
- JP
- Japan
- Prior art keywords
- excitation coil
- coil
- ellipse
- eddy current
- current flaw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 10
- 230000005284 excitation Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims 2
- 230000006698 induction Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
第１図、第２図は本考案の渦流探傷コイルを示
す。第３図は渦流探傷コイルと電子回路との接続
を示す。第４図は本考案の渦流探傷コイルによる
探傷結果を示す。第５図は従来の貫通コイル、第
６図、第７図は従来のセグメントコイルを示す。
１…被検査材、２…貫通コイル、３…セグメン
トコイル、４…励磁コイル、５…検出コイル、６
…平衡器、７…増幅器、８…検波器、９…直流増
幅器、１０…記録器、１１…発振器、１２…位相
器、１３…欠陥、１４…渦流探傷コイル。
1 and 2 show the eddy current flaw detection coil of the present invention. FIG. 3 shows the connection between the eddy current flaw detection coil and the electronic circuit. FIG. 4 shows the results of flaw detection using the eddy current flaw detection coil of the present invention. FIG. 5 shows a conventional through coil, and FIGS. 6 and 7 show conventional segment coils. 1... Material to be inspected, 2... Penetrating coil, 3... Segment coil, 4... Excitation coil, 5... Detection coil, 6
...balancer, 7...amplifier, 8...detector, 9...DC amplifier, 10...recorder, 11...oscillator, 12...phase shifter, 13...defect, 14...eddy current flaw detection coil.
Claims (1)
磁コイルを中空長楕円状の複数巻線とし、該励磁
コイル中空部の長円方向に、矩形状・自己比較形
に長円長さの数分の１長さに複数巻線した検出コ
イルを複数個配置し、該励磁コイルと複数の検出
コイルを被検査材と平行に配置したことを特徴と
する渦流探傷コイル。 In a mutual induction type eddy current flaw detection coil, the excitation coil has multiple windings in the shape of a hollow elongated ellipse, and the excitation coil has a rectangular self-comparison shape in the ellipse direction of the hollow part of the excitation coil, which is a fraction of the length of the ellipse. An eddy current flaw detection coil characterized in that a plurality of detection coils each having a plurality of windings are arranged along its length, and the excitation coil and the plurality of detection coils are arranged in parallel with a material to be inspected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2497088U JPH01132961U (en) | 1988-02-29 | 1988-02-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2497088U JPH01132961U (en) | 1988-02-29 | 1988-02-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01132961U true JPH01132961U (en) | 1989-09-11 |
Family
ID=31245281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2497088U Pending JPH01132961U (en) | 1988-02-29 | 1988-02-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01132961U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005114165A1 (en) * | 2004-05-21 | 2005-12-01 | Nihon University | Eddy current flaw inspecting probe and eddy current flaw inspecting apparatus |
| JP2019082369A (en) * | 2017-10-30 | 2019-05-30 | 矢崎エナジーシステム株式会社 | Corrosion diagnostic method and corrosion diagnostic device |
-
1988
- 1988-02-29 JP JP2497088U patent/JPH01132961U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005114165A1 (en) * | 2004-05-21 | 2005-12-01 | Nihon University | Eddy current flaw inspecting probe and eddy current flaw inspecting apparatus |
| JP2019082369A (en) * | 2017-10-30 | 2019-05-30 | 矢崎エナジーシステム株式会社 | Corrosion diagnostic method and corrosion diagnostic device |
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